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1. 发明专利

JPH09288730A IMAGE IDENTIFYING METHOD AND DEVICE THEREFOR 失效
公开(公告)号：JPH09288730A
公开(公告)日：1997-11-04
申请号：JP10150296
申请日：1996-04-23
申请人： DAM SUIGENCHI KANKYO SEIBI CEN , HITACHI LTD
发明人： TERAZONO KATSUJI , MIYASHIRO AKIRA , BABA KENJI , YAMAKOSHI NOBUYOSHI , ENBUTSU ICHIROU
IPC分类号： G01N33/483 , G06T1/00 , G06T7/00
摘要： PROBLEM TO BE SOLVED: To provide an image identifying method and device capable of eliminating or extracting only a desired image from original images by paying attention to luminance information. SOLUTION: A means 200 binarizes and extracts all the images in the original images 190 and the means 300 extracts picture elements whose luminance is equal to or more than (or less than) a prescribed threshold value from the original images. For the threshold value, the value at the outside of the range of the luminance of the picture elements for constituting noise and in the inside of the range of the luminance of the picture elements for constituting an object image is set. By setting the threshold value in such a manner, at least a part of the object image is extracted without extracting the noise. In this case, instead of the luminance, the second order differential value of the luminance can be used as well. Thereafter, the means 400 obtains the image for covering the image of the object image extracted by the means 200 by expanding the image extracted by the means 300. Further, the image and the other image obtained by the means 200 are made a logical product. Thus, only the desired object image is accurately restored.

2. 发明专利

JPH0921738A METHOD AND SYSTEM FOR MEASURING CONCENTRATION OF MICROORGANISM 失效
公开(公告)号：JPH0921738A
公开(公告)日：1997-01-21
申请号：JP16878495
申请日：1995-07-04
申请人： HITACHI LTD , DAM SUIGENCHI KANKYO SEIBI CEN
发明人： OOBUCHI MISAKO , WATANABE SHOJI , YAHAGI TOSHIO , YODA MIKIO , HARA NAOKI , YAMAKOSHI NOBUYOSHI , BABA KENJI , TERASONO KATSUJI
IPC分类号： G01N15/02 , G01N15/06 , G01N21/17 , G01N33/18
摘要： PROBLEM TO BE SOLVED: To realize an accurate on-line measuring system for a trace of microorganism by determining a concentrating rate based on a predetermined target value and a predetermined directly measured quality value of water to be measured and then concentrating the water to be measured to that concentrating rate so that the concentration of microorganism is increased. SOLUTION: Stock water 1 in a lake or dam is sampled with a pump 10 and passed through a strainer in order to remove large dirt, e.g. sand and leaves, thus producing a water to be measured and then the turbidity thereof is measured 30. A concentrating rate determining unit 40 then determines a correct concentrating rate based on the turnbidity data and a predetermined target value using an apparatus 60 for measuring the image of microorganism and a concentrator 50 concentrates the water to be measured to that concentration rate. A unit 70 for calculating the concentration of microorganism calculates the concentration of microorganism in the nonconcentrated water to be measured based on the measured 60 quantity of microorganism and concentration rate of the water to be measured and the concentration of microorganism is displayed 80 along with the turbidity, concentrating rate and the quantity of microorganism. Since the water to be measured is concentrated to a level appropriate for measurement 60 of microorganism, efficiency and accuracy can be enhanced in the measurement.

3. 发明专利

JPH07284782A METHOD FOR COMPUTING REQUIRED AMOUNT OF OZONE AND CONTROLLING OZONE INJECTION 失效
公开(公告)号：JPH07284782A
公开(公告)日：1995-10-31
申请号：JP7685194
申请日：1994-04-15
申请人： HITACHI LTD
发明人： HAGA TETSURO , KUBOTA MASAYOSHI , ISHIDA MASAHIKO , WATANABE SHOJI , SUZUKI MINORU , KOMATSU NAOTO , HARA NAOKI , YAMAKOSHI NOBUYOSHI
IPC分类号： C02F1/78
摘要： PURPOSE:To compute easily and precisely the amount of ozone necessary for the reaction with an ozone consuming component by a method in which ozone is injected respectively to water from which an ozone consuming component was removed and water to be treated and the dissolved ozone concentrations are measured to obtain the difference in the measurement results. CONSTITUTION:Dissolved ozone concentration CW1 in treated water TW1 which was obtained by injecting ozone G into water W to be treated in an ozone catalytic reaction vessel 1 (reaction vessel) is measured with a dissolved ozone concentration meter 13, and the results are inputted in a computer 24. The treated water TW1 from which an ozone consuming component was removed in the reaction vessel 1 is introduced into an ozone catalytic comparative reaction vessel 16 as comparative water TW2, and ozone is injected. The dissolved ozone concentration CW2 in the comparative water TW2 is measured with a dissolved ozone concentration meter 21, and the results are inputted in the computer 24. The computer 24 calculates CW2-CW1 to determine the required amount of ozone for the water W. The amounts of ozone G to be injected into the treated water TW1 and the comparative water TW2 are controlled so that the concentration of dissolved ozone in the water W becomes a specified value or more.

4. 发明专利

JPH09234478A SEWAGE TREATMENT BY OZONE INJECTION AND DEVICE THEREFOR 失效
公开(公告)号：JPH09234478A
公开(公告)日：1997-09-09
申请号：JP4445696
申请日：1996-03-01
申请人： HITACHI LTD
发明人： YAHAGI TOSHIO , WATANABE SHOJI , BABA KENJI , YODA MIKIO , HARA NAOKI , YAMAKOSHI NOBUYOSHI
IPC分类号： B01D24/02 , C02F1/78
摘要： PROBLEM TO BE SOLVED: To efficiently execute the removal of waste gaseous ozone and to improve the water quality of treated water by transmitting the quality of a sewage and those of a treated water with a sand filter and a treated water with ozone to an arithmetic processor and controlling an ozone pouring quality so as to be appropriate to a present sewage quality with the arithmetic processor. SOLUTION: Each of water quality value signals 50, 51 and 52 of the sewage, the treated water with the sand filter and the treated water with the ozone measured respectively with water quality sensors 40, 41 and 42 is transmitted to a water quality measuring instrument 20, moreover, the water quality value is transmitted to the arithmetic processor 21 as a water quality judging signal 53. In the arithmetic processor 21, the ozone pouring quantity corresponding to an org. matter and the mixture of a soluble org. matter with a floating substance in the raw water (sewage) is calculated from the water quality value signal 50 of the sewage, and the ozone pouring quantity for the org. matter quantity which is the quantity by removing the mixture of the soluble org. matter with the floating substance using the sand filter is calculated from the water quality value signal 51 of treated water with the sand filter, and the differential value between both the pouring quantities is controlled as a suitable ozone pouring quantity. Accordingly, the quality of the treated water is improved.

5. 发明专利

JPH08215690A OPTIMUM OZONE INJECTION RATE CALCULATION APPARATUS AND OZONE INJECTION CONTROL APPARATUS 失效
公开(公告)号：JPH08215690A
公开(公告)日：1996-08-27
申请号：JP2495395
申请日：1995-02-14
申请人： HITACHI LTD
发明人： YAMAKOSHI NOBUYOSHI , YODA MIKIO , HAGA TETSURO , HARA NAOKI
IPC分类号： C02F1/78
摘要： PURPOSE: To simply calculate an ozone amt. necessary for the reaction with an ozone consuming component in water to be treated with high accuracy by injecting ozone into water to be treated and comparison water prepared by removing an ozone consuming component from the water to be treated and measuring the difference between the concns. of dissolved ozone per a unit water amt. of both of them. CONSTITUTION: Water W to be treated is introduced into an ozone consuming component removing reaction tank 20 and ozone gas with predetermined concn. is injected into the reaction tank 20 from an ozonizer 2. The water to be treated and ozone are brought into contact with each other in the reaction tank 20 and treated water containing no ozone consuming component is introduced into a dissolved ozone removing reaction tank 25 and subsequently introduced into an ozone self-decomposing reaction tank 30. The amt. of waste ozone discharged to the open air from water is measured by a waste ozone concentration meter 32. The amt. of dissolved ozone contained in the water within the ozone self-decomposing reaction tank 30 is measured by a dissolved ozone concentration meter 35. Further, an ozone demand amt. is calculated on the basis of the difference between the amts. of dissolved ozone of both tanks 1, 30 in an ozone demand calculation part 40.

6. 发明专利

JPH08206678A FLOW-IN LOAD DISTRIBUTION DETERMINING APPARATUS FOR WATER TREATMENT PLANT 失效
公开(公告)号：JPH08206678A
公开(公告)日：1996-08-13
申请号：JP1492795
申请日：1995-02-01
申请人： HITACHI LTD
发明人： HARA NAOKI , KIMURA FUMITOMO , YAMAKOSHI NOBUYOSHI , WATANABE SHOJI , KAGEYAMA KOJI , YAHAGI TOSHIO , YODA MIKIO
IPC分类号： C02F3/12
摘要： PURPOSE: To calculate flow-in load distribution in a water treatment plant provided with a plurality of line systems of activated sludge treatment facilities by utilizing already installed measuring appliances. CONSTITUTION: The response time between data of time series from a water quality measuring apparatus 50 for flowing sewage and water quality measuring apparatuses 105a, 105b for a primary precipitation pond is computed by a correlation analyzing means 210 and converted into flowing-in quantity for each line system by a flow rate computing means 220. The present load distribution is calculated by the flowing in load distribution calculating means based on the flowing-in quantity of each line system. A gate open degree adjusting means 240 controls the open degree of gates 160a, 160b based on the present value and the set value of the flowing in load distribution. Consequently, the flowing load (flowing-in quantity) can be kept constant at a prescribed value by utilizing already existing facilities.

7. 发明专利

JPH10192606A OPERATION OF SAND FILTRATION TANK 失效
公开(公告)号：JPH10192606A
公开(公告)日：1998-07-28
申请号：JP359397
申请日：1997-01-13
申请人： HITACHI LTD
发明人： YAHAGI TOSHIO , WATANABE SHOJI , YODA MIKIO , HARA NAOKI , YAMAKOSHI NOBUYOSHI
IPC分类号： B01D24/02 , B01D24/46 , B01D24/48 , B01D29/60 , B01D29/62
摘要： PROBLEM TO BE SOLVED: To enable the performance of a sand filtration tank to be stabilized for a long time by setting the target value of the quantity of suspended substance to be captured at the time of a single filtering step and stopping a water circulation and switching the operation to a cleaning step when the calculated value of the quantity of the suspended substance captured in a sand layer reaches the set target value. SOLUTION: In a filtering step, the signal value 40 of untreated water quality and quantity and the signal value 41 of filtrate quality which are obtained by measurement with an influent quality sensor 20, a water quantity sensor 20' and a filtrate quality sensor 21, are sent to a calculation circuit 23 for calculating a suspended substance(SS) uptake quantity. In the calculation circuit 23, the SS uptake quantity to be obtained through a sand filtration tank 10 at the time of the filtering step is calculated. A calculated SS value 43 is entered to an interpretation circuit 24, and then is compared to the target value 47 of the SS uptake quantity (the SS quantity to be uptake is empirically calculated based on the quantity and quality of a filler and then the SS uptake quantity obtained through a single filtering step is previously entered). Further, when the deviation of the calculated SS value 43 from the target value 47 of the SS uptake quantity is below a specified value, the water supply to the filtering step is suspended and the operation is switched to a cleaning step.

8. 发明专利

JPH10118411A METHOD AND DEVICE FOR CONTROLLING INJECTION OF FLOCCULANT IN WATER PURIFICATION PLANT 失效
公开(公告)号：JPH10118411A
公开(公告)日：1998-05-12
申请号：JP28366696
申请日：1996-10-25
申请人： HITACHI LTD
发明人： HAGA TETSURO , OZAKI MICHINORI , WATANABE SHOJI , HARA NAOKI , YAMAKOSHI NOBUYOSHI
IPC分类号： B01D21/30 , C02F1/52
摘要： PROBLEM TO BE SOLVED: To inhibit failure in flocculation and to well maintain turbidity of precipitation water by deciding the injection rate of a flocculant in accordance with both turbidity in raw water and concentration of organic substance. SOLUTION: Raw water RW is introduced into a chemical mixing basin 2 and a flocculant 3 such as aluminum sulfate or PAC is injected therein. Raw water RW sampled by a sampling pump 9 is sent to a turbidity meter 10 measuring raw water turbidity Tu and sent to an organic substance concentration meter 11 measuring concentration 0c of organic substance. An operator 12 calculates standard flocculant injection rate D1 corresponding to raw water turbidity Tu. This raw water turbidity Tu measured by the turbidity meter 10 is inputted to the operator 12. In the operator 12, the standard flocculant injection rate D1 corresponding to raw water turbidity Tu is calculated on the basis of a preset fluocculant injection rate operational formula. D1=eTuTN wherein, e, NT are coefficient. Further, as the standard flocculant injection rate D1 for raw water turbidity Tu, flocculant injection rate necessary to obtain proper precipitation water turbidity is previously obtained by a means such as a jar test.

9. 发明专利

JPH0873202A CONTROLLER FOR AMOUNT OF OZONE TO BE GENERATED FOR WATER TREATING FACILITY 失效
公开(公告)号：JPH0873202A
公开(公告)日：1996-03-19
申请号：JP21343094
申请日：1994-09-07
申请人： HITACHI LTD
发明人： KAGEYAMA KOJI , KOMATSU NAOTO , HARA NAOKI , YAMAKOSHI NOBUYOSHI , WATANABE SHOJI , BABA KENJI , HAGA TETSURO
IPC分类号： C02F1/78 , C01B13/10 , C01B13/11
摘要： PURPOSE: To adequately control the amt. of ozone to be generated with respect to a flow rate of inflow water by adding an arithmetic section for correcting the control target value on the flow rate of the inflow water to the fore stage of an existing control system for the ozone to be generated. CONSTITUTION: The raw water taken in from rivers, etc., is introduced to a flocculating and settling treatment 1, where a flocculating agent is injected into the raw water to remove sand and suspended materials. The raw water is automatically measured by a flow meter 3 and is introduced by a raw water pump 2 to an ozone contact basin 4. The gaseous raw material of an ozonizing gas is supplied by a blower 10 to an ozone generator 11 and the generated gaseous ozone is supplied as fine bubbles by a gas diffusion pipe 12 into the ozone contact basin 4, by which the dissolved org. materials in the water to be treated are oxidation decomposed. At this time, the ozone injection rate set by an ozone injection rate setter 6 is corrected by the measured value of the flowmeter 3 in the arithmetic section 7 for correcting the ozone injection rate and is transmitted to the arithmetic section 8 for the amt. of the ozone to be generated and the control section 9 for the amt. of the ozone to be generated. The effluent water from the ozone contact basin 4 enters a bioactive carbon treating device 5 where the dissolved org. materials are adsorbed away and the effluent water is subjected to the oxidation decomposition of microorganisms then to sterilization with chlorine. This water is distributed as city water.

10. 发明专利

JPH0712738A MICRO-ORGANISM MONITORING SYSTEM 失效
公开(公告)号：JPH0712738A
公开(公告)日：1995-01-17
申请号：JP15480293
申请日：1993-06-25
申请人： HITACHI LTD
发明人： GO FUMITOMO , HARA NAOKI , YODA MIKIO , YAMAKOSHI NOBUYOSHI , WATANABE SHOJI , OOBUCHI MISAKO , YAHAGI TOSHIO
IPC分类号： G01B11/02 , G01N21/85
摘要： PURPOSE:To effectively use data of microorganism for operational management by image-processing image signals from an image pick-up device for picking up an image of microorganism in liquid, and by enabling water to be tested is replaced in accordance with a signal from a microorganism recognizing and measuring device. CONSTITUTION:Inflow sewage flows into aeration tanks 110a, 110b after large dust is settled and removed therefrom in settling sumps 100a, 100b. Waste to be tested is fed into a common water tank 180 from the aeration tanks 110a, 110b through a sludge conveying pipe 191. An image pick-up device 200 comprises an underwater microscope, and is submerged in the liquid in the water tank 180, and a picked-up image signal is delivered to a filed monitor 340 through a field control panel 330, and is also delivered to an image processing device 400 through the control panel 330 and a central control panel 300. The device 400 processes an image signal indicating an magnified image of microorganism so as to identify a kind of microorganism, and calculates a size and a number thereof while delivers an abnormal signal to a control circuit 500.

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